US3390958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing crystalline zeolitic molecular sieves
Assignee: Union Carbide Corp
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Filing: 1964-10-19
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Granted: 1968-07-02
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Expires: 1984-10-19
Abstract
No abstract record available.
Inventors
- 👤 Peter A Howell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:08
CPC Classifications
C; C01; C01B; C01B39/00; C01B39/02; C01B39/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3116973A
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US3065054A
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US3119660A
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US3094383A
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US3130007A
Cited
US3140251A
Cited
US3213038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |